JP3935123B2 - 逆起電力を利用したディスクドライブ制御方法，およびディスクドライブ - Google Patents

逆起電力を利用したディスクドライブ制御方法，およびディスクドライブ Download PDF

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Publication number
JP3935123B2
JP3935123B2 JP2003304115A JP2003304115A JP3935123B2 JP 3935123 B2 JP3935123 B2 JP 3935123B2 JP 2003304115 A JP2003304115 A JP 2003304115A JP 2003304115 A JP2003304115 A JP 2003304115A JP 3935123 B2 JP3935123 B2 JP 3935123B2
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Japan
Prior art keywords
electromotive force
mode
back electromotive
disk drive
disk
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Expired - Fee Related
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JP2003304115A
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English (en)
Japanese (ja)
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JP2004087108A (ja
Inventor
サンチョル シン
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of JP2004087108A publication Critical patent/JP2004087108A/ja
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Publication of JP3935123B2 publication Critical patent/JP3935123B2/ja
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5582—Track change, selection or acquisition by displacement of the head across disk tracks system adaptation for working during or after external perturbation, e.g. in the presence of a mechanical oscillation caused by a shock
JP2003304115A 2002-08-28 2003-08-28 逆起電力を利用したディスクドライブ制御方法，およびディスクドライブ Expired - Fee Related JP3935123B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR10-2002-0051162A KR100475090B1 (ko) 2002-08-28 2002-08-28 역기전력을 이용한 디스크 드라이브 제어 방법 및 장치

Publications (2)

Publication Number Publication Date
JP2004087108A JP2004087108A (ja) 2004-03-18
JP3935123B2 true JP3935123B2 (ja) 2007-06-20

Family

ID=31492905

Family Applications (1)

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JP2003304115A Expired - Fee Related JP3935123B2 (ja) 2002-08-28 2003-08-28 逆起電力を利用したディスクドライブ制御方法，およびディスクドライブ

Country Status (5)

Country Link
US (2) US7064917B2 (ko)
EP (1) EP1394799B1 (ko)
JP (1) JP3935123B2 (ko)
KR (1) KR100475090B1 (ko)
DE (1) DE60321101D1 (ko)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100618846B1 (ko) * 2004-07-16 2006-09-01 삼성전자주식회사 하드디스크 드라이브의 충격 보호 방법 및 이에 적합한하드디스크 드라이브
US7171313B2 (en) * 2005-03-10 2007-01-30 George Zusman Protection apparatus for reciprocating machine
US7215504B1 (en) 2005-10-19 2007-05-08 Western Digital Technologies, Inc. Disk drive using an optical sensor to detect a position of an actuator arm
KR100699898B1 (ko) * 2005-11-14 2007-03-28 삼성전자주식회사 낙하감지 및 낙하충격에 대비한 헤드의 대피 기능을 갖는하드디스크 드라이브
US7365932B1 (en) 2005-12-30 2008-04-29 Western Digital Technologies, Inc. Disk drive comprising an optical sensor for vibration mode compensation
US7619844B1 (en) 2005-12-30 2009-11-17 Western Digital Technologies, Inc. Disk drive comprising a mechanical position sensor to prevent a runaway condition
US7495857B1 (en) 2005-12-30 2009-02-24 Western Digital Technologies, Inc. Servo writing a disk drive by writing spiral tracks using a mechanical position sensor
US7595958B2 (en) * 2006-01-06 2009-09-29 Charles Partee System including a hard disk drive and stray magnetic field sensor and associated method
US7480116B1 (en) 2006-01-20 2009-01-20 Western Digital Technologies, Inc. Disk drive employing coarse position feedback from mechanical position sensor to improve format efficiency
KR100761844B1 (ko) * 2006-04-28 2007-09-28 삼성전자주식회사 디스크 드라이브의 외란 대응 방법 및 그 장치
JP2007335015A (ja) * 2006-06-15 2007-12-27 Fujitsu Ltd ランプ位置検出装置、ランプ位置検出方法および記憶装置
US7872827B2 (en) * 2007-07-27 2011-01-18 Seagate Technology Llc Impact protection for a retractable control object
US8107183B2 (en) * 2008-07-02 2012-01-31 Apple Inc. Method and device for hard drive shock event detection
US9099147B1 (en) 2014-09-22 2015-08-04 Western Digital Technologies, Inc. Data storage device commutating a spindle motor using closed-loop rotation phase alignment
US8982501B1 (en) 2014-09-22 2015-03-17 Western Digital Technologies, Inc. Data storage device compensating for repeatable disturbance when commutating a spindle motor
JP2021034088A (ja) * 2019-08-28 2021-03-01 株式会社東芝 磁気ディスク装置、および該磁気ディスク装置のデータ保護方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05101573A (ja) * 1991-10-09 1993-04-23 Kyushu Nippon Denki Software Kk 振動検出時のアクセス一時停止による磁気デイスク装置保護方式
JPH076488A (ja) * 1993-06-18 1995-01-10 Nec Corp ディスク・ドライブ用衝撃検出回路
US5491394A (en) * 1993-08-20 1996-02-13 Maxtor Corporation Acceleration sensing write disable system utilizing actuator arm coil
US5654840A (en) * 1994-06-30 1997-08-05 Western Digital Corporation Hard disk drive which uses the back EMF of the actuator to detect shocks
JPH1116259A (ja) * 1997-06-24 1999-01-22 Internatl Business Mach Corp <Ibm> ヘッド機構制御装置および信号供給制御装置ならびにディスクドライブ装置
JP3701121B2 (ja) * 1998-05-15 2005-09-28 三星電子株式会社 光ディスク装置の偏重心ディスク検出機構
US6700344B1 (en) * 1998-12-16 2004-03-02 Stmicroelectronics Asia Pacific (Pte) Ltd. Method of controlling the speed of an arm of a disk drive
US6476996B1 (en) * 2000-02-15 2002-11-05 Western Digital Technologies, Inc. Disk drive comprising an actuator driver circuit for retracting a head independent of a servo microprocessor when a spindle speed fault mode is detected
JP3809602B2 (ja) 2001-01-11 2006-08-16 株式会社生方製作所 磁気ディスク装置保護機構
US7349174B2 (en) * 2001-11-15 2008-03-25 Seagate Technology Llc Soft sensor for operating shock in a disc drive
US6876510B2 (en) * 2002-03-18 2005-04-05 Seagate Technology Llc Detecting head landings on a data zone of a data storage disc
US7130255B2 (en) * 2002-04-19 2006-10-31 Gateway Inc. Method of CD/DVD vibration detection by monitoring motor conditions
US20040246833A1 (en) * 2003-06-05 2004-12-09 Ehrlich Richard M. Disk drive system model for determining a threshold to perform disturbance rejection
US7143002B2 (en) * 2005-04-15 2006-11-28 Hitachi Global Storage Technologies B.V. Method for detecting external acceleration to a hard disk drive by a spindle motor

Also Published As

Publication number Publication date
US20040051993A1 (en) 2004-03-18
DE60321101D1 (de) 2008-07-03
EP1394799A2 (en) 2004-03-03
US7561364B2 (en) 2009-07-14
US7064917B2 (en) 2006-06-20
JP2004087108A (ja) 2004-03-18
EP1394799B1 (en) 2008-05-21
KR100475090B1 (ko) 2005-03-10
KR20040019576A (ko) 2004-03-06
US20060209451A1 (en) 2006-09-21
EP1394799A3 (en) 2006-03-01

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